1 /*
   2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 /**
  24  * @test
  25  * @bug     8015606
  26  * @summary Test verifies whether a text is rendered correctly to
  27  *          a custom buffered image.
  28  *
  29  * @run     main RenderToCustomBufferTest
  30  */
  31 
  32 import java.awt.Color;
  33 import java.awt.Font;
  34 import java.awt.Graphics2D;
  35 import java.awt.RenderingHints;
  36 import java.awt.Transparency;
  37 import java.awt.color.ColorSpace;
  38 import java.awt.image.BufferedImage;
  39 import java.awt.image.ColorModel;
  40 import java.awt.image.ComponentColorModel;
  41 import java.awt.image.DataBuffer;
  42 import java.awt.image.WritableRaster;
  43 
  44 public class RenderToCustomBufferTest {
  45      public static void main(String[] args) {
  46         final BufferedImage dst_custom = createCustomBuffer();
  47         final BufferedImage dst_dcm = new BufferedImage(width, height,
  48                 BufferedImage.TYPE_INT_RGB);
  49 
  50         renderTo(dst_custom);
  51         renderTo(dst_dcm);
  52 
  53         check(dst_custom, dst_dcm);
  54     }
  55 
  56     private static void check(BufferedImage a, BufferedImage b) {
  57         for (int y = 0; y < height; y++) {
  58             for (int x = 0; x < width; x++) {
  59                 int pa = a.getRGB(x, y);
  60                 int pb = b.getRGB(x, y);
  61 
  62                 if (pa != pb) {
  63                     String msg = String.format(
  64                         "Point [%d, %d] has different colors: %08X and %08X",
  65                         x, y, pa, pb);
  66                     throw new RuntimeException("Test failed: " + msg);
  67                 }
  68             }
  69         }
  70     }
  71 
  72     private static BufferedImage createCustomBuffer() {
  73         ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
  74         ColorModel cm = new ComponentColorModel(cs, false, false,
  75                 Transparency.OPAQUE, DataBuffer.TYPE_FLOAT);
  76         WritableRaster wr = cm.createCompatibleWritableRaster(width, height);
  77 
  78         return new BufferedImage(cm, wr, false, null);
  79     }
  80 
  81     private static void renderTo(BufferedImage dst) {
  82         System.out.println("The buffer: " + dst);
  83         Graphics2D g = dst.createGraphics();
  84 
  85         final int w = dst.getWidth();
  86         final int h = dst.getHeight();
  87 
  88         g.setColor(Color.blue);
  89         g.fillRect(0, 0, w, h);
  90 
  91         g.setColor(Color.red);
  92         Font f = g.getFont();
  93         g.setFont(f.deriveFont(48f));
  94 
  95         g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
  96                RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
  97 
  98         // NB: this clip ctriggers the problem
  99         g.setClip(50, 50, 200, 100);
 100 
 101         g.drawString("AA Text", 52, 90);
 102 
 103         g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
 104                RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
 105 
 106         // NB: this clip ctriggers the problem
 107         g.setClip(50, 100, 100, 100);
 108         g.drawString("Text", 52, 148);
 109 
 110         g.dispose();
 111     }
 112 
 113     private static final int width = 230;
 114     private static final int height = 150;
 115 }